Molded Case Circuit Breaker, 50 A Amps, AC Voltage Rating 600V AC, Max. AIR Rating 65kA at 240V AC, For Use With I Line Panelboards, Series HG, High Amp Trip Setting 850 A, Low Amp Trip Setting 400 A, Circuit Breaker Type Standard, Number of Poles 3, DC Voltage Rating 250V DC, Terminal Connection Lug, Trip Type Thermal Magnetic, Phase Three, Instantaneous Trip Fixed, Phase Connection ABC, Frame Size 150A/HG, Circuit Breaker Mounting Style I-Line, Height 9.73 in, Width 4.48 in, Depth 4.8 in